Scientists are developing the techniques to spot mass stranding events from orbit.

Mars once had salt lakes, similar to some on Earth. Scientists now have an idea as to what happened to them.

New lens technique spots tiny dwarf galaxy in the first, super-energetic stages of star formation.

Alexei Leonov, who died on Friday, could have been the first human to land on the Moon.

Most of the ice on the moon is probably billions of years old, but there's some that may have a much more recent origin, researchers say.

Soviet cosmonaut Alexei Leonov floated above the Earth for 12 minutes in 1965.

The Sun's outbursts can disrupt technology on Earth, and Europe needs better protection.

Jupiter had been the "moon king" for some 20 years.

Pulses of a fast radio burst from a distant galaxy lasted less than the time it takes to blink. But that was enough to get some new info on galactic halos.

Scientists simulate early galaxy formation in a universe of dark matter that is ultralight, or “fuzzy,” rather than cold or warm.